How to Check the Fit of Horse Boots:
Remember the charts below are a guideline only. You should always check the fit of your horse's boots before riding. You should be able to slide one finger between the protective boot and the horse's leg. Your finger should feel snug between the two surfaces. If the boot is too big or too loose, dirt can get inside and cause abrasions, or slide downward where it may disrupt the horse's movement. If the boot is too tight, it can cause pressure on the horse's tendon. The length of a boot on your horse's leg should be checked as well. You don't want the boot to be so long that it rises to the back of a horse's knee and interferes with normal movement. It should, however, be long enough to cover most of the cannon bone area as well as the inside of the fetlock.